INDEX. 
977 
Sapindaceae, 653, 660. 
Sapindeae, 660. 
Saponaria, 535. 
Sapotacese, 659. 
Saprolegnia, 897, 955 (Fig. 
163). 
Saprolegnieae, 235, 244, 272, 
955- 
Saprophytes, 214, 242, 020j 
649, 697, 721, 942. 
Sarcina, 249, 954 (Fig. 166). 
Sarcocarp, 615. 
Sarcogyne, 325. 
Sarracenia, 640. 
Sauromatum, 183, 624. 
Saururese, 656. 
Saxifraga, 562 (Fig. 386). 
Saxifragaceae, 642, 661, 949. 
Saxifragineae, 661. 
Scabiosa, 593. 
Scalariform vessels, 25, 27, 
iH, 439 (Figs.27, 94, 308). 
Scale-leaves, 186, 214. 
Scattered arrangement, 188. 
Sehizaea, 432. 
Schizaeacese, 391, 440. 
Schizandreae, 657. 
Schizocarp, 614, 615. 
Schizomycetes, 244, 248, 
954 (Fig. 166). 
Schultz's solution, 69. 
Sciadopitys, 519, 527. 
Scilla, 597. 
Scirpus, 635 (Fig. 426). 
Scitamineae, 632. 
Sclerantheae, 66 t. 
Scleranthus, 645 (Fig. 458). 
Sclerenchyma, 35, 84, 122, 
125 (Fig. 28). 
Scleroblasts, 83, 84. 
Sclerotium, 306, 315, 317. 
Scolecite, 310. 
Scorpioid cyme, 180, 597 
(Fig. 136). 
Scorpioid dichotomy, 178 
(Fig. 134). 
Scorzonera, 87 (Fig. 72). 
Scrophularia, 90 (Fig. 75). 
Scrophulariaceae, 658. 
Scutellum, 166, 618 (Figs. 
123, 124). 
Scutiform leaf, 444, 447 
(Fig. 311). 
Scytonema, 248. 
Scytonemeae, 248, 328. 
Scytosiphon, 956. 
Secondary — 
bundles, 136, 653, 950. 
endosperm, 582. 
meristem, 82. 
phloem (bast), 127, 131, 
"650. 
products of metastasis, 
705. 
Secondary — 
roots, 164. 
wood (xylem), 127, 131, 
531, 650, 651. 
Secretion-canals, 93. 
Secundine, 571. 
Securidaca, 136, 653, 950. 
Sedum, 597 (Fig. 85). 
Seed, 486, 593, 618, 633. 
Segmentation of the apical 
cell, 139, 951 (Figs. 108- 
112). 
Selagineae, 658. 
Selaginella, 47, 80, 122, 471, 
473, 476, 477, 479, 480, 
481, 482, 483, 486 (Figs. 
44,67, 100, 331, 335-341)- 
Selaginelleae, 392, 481. 
Senebiera, 604. 
Senecio, 578. 
Sepal, 214, 538. 
Septate Fibres, 118, 651 
(Fig. 97). 
Septicidal dehiscence, 616. 
Septifragal dehiscence, 616. 
Sequoia, 509, 527. 
Serjania, 653. 
Serpentarieae, 656. 
Seta— 
of Cyperaceas, 538. 
of Muscineae, 344, 351, 
374 (Figs. 266, 273). 
Sexual — 
affinity, 916. 
generation, 225, 
reproduction, 223, 896. 
reproductive cells, 224, 
897. 
Sexuality, development of, 
901. 
Sheath-teeth, 400 (Figs. 278, 
282). 
Shells, formation of, in the 
cell-wall, 32 (Figs. 35-38). 
Shield, 298 (Figs. 198, 200). 
Shoot, 158, 215. 
Sieve-cells, 22. 
Sieve-plates, 22, 89, 118 
(Figs. 98, 99). 
Sieve-pores, 89. 
Sieve-tubes, 88, 118, 948 
(Figs. 74, 98, 99). 
Sigillaria, 485. 
Sileneae, 661. ~ 
Silicon, 696, 700. 
Siliqua, 616. 
Silphium, 598, 640. 
Silver grain, 130, 651. 
Simarubeae, 660. 
Simple glands, 84. 
Simultaneous whorls, 187. 
Sinningia, 580. 
Siphoneas, 271, 955. 
Sirogonium, 258. 
3 R 
Sirosiphon, 248, 328. 
Sisymbrium, 599. 
Sisyrinchium, 578. 
Skeleton of cell- wall, 36. 
Skeleton of starch-grain, 60. 
Sleep of plants, 873. 
Sodium, 696, 699. 
Soft bast, 119. 
Solanaceae, iii, 219, 597, 
658. 
Solanum, 556. 
Solorina, 326. 
Solubility of starch-grains, 
61. 
Sorby's researches on chlo- 
rophyll, 764. 
Sordaria, 316. 
Soredial branch, 321 (Fig. 
217). 
Soredium, 326 (Fig. 221). 
Sorus, 435 (Figs. 292, 304, 
321). 
Spadiciflorae, 631, 884. 
Spadix, 595. 
Sparmannia, 651, 884. 
Spathe, 540, 624. 
Spathularia, 311. 
Special mother-cells, 15, 32, 
554 (Figs. 34, 378, 379). 
Species, 927. 
Species, Origin of, 920. 
Species-hybrid, 915. 
Spectrum of chlorophyll,759. 
Spermatia, 308, 326, 329, 
333, 898. 
Spermogonium,3o8, 316,326, 
330, 3 33 (Fig. 223). 
Spermothamnieae, 290. 
Sphacelarieae, 283, 944, 965. 
Sphacelia, 317. 
Sphaeria, 316. 
Sphaerobacteria, 249. 
Sphaerococcus, 289. 
Sphaeromphale, 329. 
Sphaeroplea, 235, 269. 
Sphaerotheca, 311. 
Sphagnaceae, 377. 
Sphagnum, 376, 377, 378, 
379 (Figs. 81, 258-263). 
Sphenophyllum, 408. 
Sphere-crystals, 63, 64, 420 
(Fig. 51). 
Spicate inflorescences, 595. 
Spicular cells, 66, 84 (Fig. 
52). 
Spike, 595. 
Spilonema, 328. 
Spine, 218. 
Spiraea, 651. 
Spiraeeae, 662. 
Spiral arrangement, 190. 
Spiral flowers, 600. 
Spiral theory of phyllotaxis, 
201. 
